The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/pdf/SkPDFResourceDict.cpp
gfx/skia/trunk/src/pdf/SkPDFResourceDict.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:3698034fb0f2 |
|---|---|
| 1 /* | |
| 2 * Copyright 2013 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #include "SkPDFResourceDict.h" | |
| 9 #include "SkPostConfig.h" | |
| 10 | |
| 11 // Sanity check that the values of enum SkPDFResourceType correspond to the | |
| 12 // expected values as defined in the arrays below. | |
| 13 // If these are failing, you may need to update the resource_type_prefixes | |
| 14 // and resource_type_names arrays below. | |
| 15 SK_COMPILE_ASSERT(SkPDFResourceDict::kExtGState_ResourceType == 0, | |
| 16 resource_type_mismatch); | |
| 17 SK_COMPILE_ASSERT(SkPDFResourceDict::kPattern_ResourceType == 1, | |
| 18 resource_type_mismatch); | |
| 19 SK_COMPILE_ASSERT(SkPDFResourceDict::kXObject_ResourceType == 2, | |
| 20 resource_type_mismatch); | |
| 21 SK_COMPILE_ASSERT(SkPDFResourceDict::kFont_ResourceType == 3, | |
| 22 resource_type_mismatch); | |
| 23 | |
| 24 static const char resource_type_prefixes[] = { | |
| 25 'G', | |
| 26 'P', | |
| 27 'X', | |
| 28 'F' | |
| 29 }; | |
| 30 | |
| 31 static const char* resource_type_names[] = { | |
| 32 "ExtGState", | |
| 33 "Pattern", | |
| 34 "XObject", | |
| 35 "Font" | |
| 36 }; | |
| 37 | |
| 38 static char get_resource_type_prefix( | |
| 39 SkPDFResourceDict::SkPDFResourceType type) { | |
| 40 SkASSERT(type >= 0); | |
| 41 SkASSERT(type < SkPDFResourceDict::kResourceTypeCount); | |
| 42 | |
| 43 return resource_type_prefixes[type]; | |
| 44 } | |
| 45 | |
| 46 static const char* get_resource_type_name( | |
| 47 SkPDFResourceDict::SkPDFResourceType type) { | |
| 48 SkASSERT(type >= 0); | |
| 49 SkASSERT(type < SkPDFResourceDict::kResourceTypeCount); | |
| 50 | |
| 51 return resource_type_names[type]; | |
| 52 } | |
| 53 | |
| 54 SkPDFResourceDict::SkPDFResourceDict() : SkPDFDict() { | |
| 55 const char procs[][7] = {"PDF", "Text", "ImageB", "ImageC", "ImageI"}; | |
| 56 SkPDFArray* procSets = SkNEW(SkPDFArray()); | |
| 57 | |
| 58 procSets->reserve(SK_ARRAY_COUNT(procs)); | |
| 59 for (size_t i = 0; i < SK_ARRAY_COUNT(procs); i++) { | |
| 60 procSets->appendName(procs[i]); | |
| 61 } | |
| 62 insert("ProcSets", procSets)->unref(); | |
| 63 | |
| 64 // Actual sub-dicts will be lazily added later | |
| 65 fTypes.setCount(kResourceTypeCount); | |
| 66 for (int i=0; i < kResourceTypeCount; i++) { | |
| 67 fTypes[i] = NULL; | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 SkPDFObject* SkPDFResourceDict::insertResourceAsReference( | |
| 72 SkPDFResourceType type, int key, SkPDFObject* value) { | |
| 73 SkAutoTUnref<SkPDFObjRef> ref(SkNEW_ARGS(SkPDFObjRef, (value))); | |
| 74 insertResource(type, key, ref); | |
| 75 fResources.add(value); | |
| 76 | |
| 77 return value; | |
| 78 } | |
| 79 | |
| 80 void SkPDFResourceDict::getReferencedResources( | |
| 81 const SkTSet<SkPDFObject*>& knownResourceObjects, | |
| 82 SkTSet<SkPDFObject*>* newResourceObjects, | |
| 83 bool recursive) const { | |
| 84 // TODO: reserve not correct if we need to recursively explore. | |
| 85 newResourceObjects->setReserve(newResourceObjects->count() + | |
| 86 fResources.count()); | |
| 87 | |
| 88 for (int i = 0; i < fResources.count(); i++) { | |
| 89 if (!knownResourceObjects.contains(fResources[i]) && | |
| 90 !newResourceObjects->contains(fResources[i])) { | |
| 91 newResourceObjects->add(fResources[i]); | |
| 92 fResources[i]->ref(); | |
| 93 if (recursive) { | |
| 94 fResources[i]->getResources(knownResourceObjects, | |
| 95 newResourceObjects); | |
| 96 } | |
| 97 } | |
| 98 } | |
| 99 } | |
| 100 | |
| 101 SkString SkPDFResourceDict::getResourceName( | |
| 102 SkPDFResourceType type, int key) { | |
| 103 SkString keyString; | |
| 104 keyString.printf("%c%d", get_resource_type_prefix(type), key); | |
| 105 return keyString; | |
| 106 } | |
| 107 | |
| 108 SkPDFObject* SkPDFResourceDict::insertResource( | |
| 109 SkPDFResourceType type, int key, SkPDFObject* value) { | |
| 110 SkPDFDict* typeDict = fTypes[type]; | |
| 111 if (NULL == typeDict) { | |
| 112 SkAutoTUnref<SkPDFDict> newDict(SkNEW(SkPDFDict())); | |
| 113 SkAutoTUnref<SkPDFName> typeName( | |
| 114 SkNEW_ARGS(SkPDFName, (get_resource_type_name(type)))); | |
| 115 insert(typeName, newDict); // ref counting handled here | |
| 116 fTypes[type] = newDict; | |
| 117 typeDict = newDict.get(); | |
| 118 } | |
| 119 | |
| 120 SkAutoTUnref<SkPDFName> keyName( | |
| 121 SkNEW_ARGS(SkPDFName, (getResourceName(type, key)))); | |
| 122 typeDict->insert(keyName, value); | |
| 123 return value; | |
| 124 } |
